Priming attachment for explosive-engines.



W. JAY, A PRIMING ATTACHMENT FOR EXPLOSIVBBNGINES.

ALPILIOATIGN FILED JAN.31, 1912.

i 'UNITED STATES PATENT ernten.

WEBB JAY, 0F CHICAGO, ILLINOIS.

PRIMING- 'ATTACHMENT FOR E XPLOSIVE-EN GINES.

Application n led January 3 To all whom z't may conce/r11,

Be it known that I, TI-:BB JAY, a citizen of the United States, residingat Chicago.. in the county of Cook and State of illinois. have inventedvcertain new and ufseful lm.- provoments in Priming Attaclnnents torExplosive-Engines, of which tbe following;r {s a specification.

vMy invention relates in general to expiosive engines. and moreparticularly to attachments for facilitating the starting l of, A

such engines. Y i y. Considerable 'difiieulty is often experienced instarting explosive engines, such, for instance, as 'those commonly usedto propel automobiles, especially in cold Weather when the liquidhydrocarbon doe not vaporize as readily as in warm'walher. The relativeproportions oflfiuid livdrocarr bon-and air7 which form themostettieient explosive mixture Onmnning an engine liighly xploeive to.initiate the '-xploions when the engine is lcranked. It; is, tl1exet`orfrequently necesqary to inject directly i-nto an engine cylinder a Smallquantity of liquid hydrmra'rbon in order that .the explosions may beStarted. Various devices have been proposed for supplyingl to the engine'c vlinder a priming charge of liquid hyvli'orarlmn. q Such, foristance, as'a hand pump, a cup located above the. manifold to whichhydrocarbon is supplied by hand. and means for utili/.inar thecompression in the cylinders` to inject the priming charge of hvdrmfarbon into the mani-fold.

ln 'my-copendin q :q pl''i1tion. Serial No. I 002,022, tiled .lama-uri'i t, IJll. l have'disi closed a primingdev-ice gioca in which thepriming' charge is lifted f into the engine cylinder solely by thepartial i vacuum created inl the engine cylinder by the reciprocation otthe piston therein; and my present invention 'relates to an improvementin the invention covered by my lsaid @pending application and resides inpro. riding aehainber in the .primingI ri'rrdut adjacent the manifoldinto 'which hydrocarbon it' drawn h v the suction fri-hated in theengine cylinder. or cylinders, coii'u'identally with the dra wing ot'the priming; hydrocar bo'into the engine cylinder, thereby anto after ithas started, are often not sutlieie'ntly Specifica-tion of LettersPatent.

` Patented Dee. 1G, .1 913. 1.A 1912. `serian No. 674,549.

matically storing ay Small quantity of hydrocarbon at a pointadjacentthemanifold so that. it willttow by gravity or be quickly drawn into theengine cylinder by a very hihlht rotation of the starting crank,`Without requiring a sutiicient suction being crewliere the `primingconduit connects with the hydri:carbon supply to the manit'ol'd eachtime. the engine is started.

My invention. also consists in other features of construction which willhe herein- 'after more. fully disclosed in the specilication 'andspecifically pointed out in the claims.

'ln the accompanying drarringggl I 'have illustrated my invention asembodied in a Aconvenient and practical form. in Whichwg Figure 1 is aSide elevational view of a proved priming attaclnnent. Fig. 2 is anenlarged vertical .section through the priming chamber and adjacentparte; and Fig. 3 is va detail horizontal section taken on the line --3of Fig. The lanic reference characters are used to designate the sameparte in the nres ot the drawn-tg.

Reference letter indicates the cank rane', and retort-nce characters A.A2. and A* de igjnate the cylinders ot a four- \l inder engine. A

l designates the crank Shaft, and C a portion of the supporting frame ofthe. enfIllu. J l) indicatesthe radiator. and 'E the. dash- .dmaril atthe front of au automobile, be-

tween which and the radiaten' it isl usual to for e.`\' )lesiveenptorate the enfrine in antonin-bile#I as Q'enerally constructed.

l" designates the carlnxretcr. to which lleads the conduit` (i extendingfroui asuppl)Y oit' gasolcne or other liquid hydrocarbon, ii indicatesthe air intatte leadingr to the carlnneter. l( indicates the conduitleading from the carinii-eter, througrl'i which the exploaivc mixtureis-silpplicd to the engine. cylinders. l. indicates a luanitold, withwhich the conduit' l( conunuuicates and from which extend branchconduits L. LZ, La, and lf, to. the respective cylinders.

ated to liftthehydrocarbon from the vpoint.-

`totlr-cylimhsn' engineprorided with my im- Several tig- The lDartsabove described do not in themselves constitute my inventiomas they aresui-h as are commonly used in propelling autombiles..

While l have illustrated and described the above parts of an automobileengine as conv sisling in certain specific structures, yet itivill beunderstood that my invention is not limited in its application to anyspecific form of engine or of its constituent parts, but that itisapplicahleto explosive engines generally, whether employed` to propelautomobiles or Jfor other purposes.'

Reference. letter M indicates a priming conduit for supplying the motivefluid,

whether it be gasolene or other forms of liq uidliydrocarbons, aroundthe carburetor to the engine cylinders when the engine is to be started.This conduit communicates atits lower end withV a supply ofniotivefluid, such, for instance as the conduit G, v'which leads from the fuelreservoir to the carbureter. The upper end of the conduit M leads' to achamber or reservoir N through any.

suitable connection, such, forinstanee, as a' screw-threaded nipple n,to the end of which is clamped the upper. end of the conduit M by anexteriorly screwthreaded coupling m.

The conduitM communicates with the in-.

terior of the chamber N at. a' point above the bottom thereof,preferably adjacent its top. vA conduit O also communicates with theinterior of the'ehambei4 Nthrough anyV suitable connection, such, forinstance, as an of thepassage p', with which the conduit O communicates,and the passage p2 leading to` the manifold, as shown 1n Fig. 3, l

Located within the chamber N is a curved tube R, one end of which isopen and located adjacent the bottom' of the ch'amber,while the otherend communicates with a passage N 2, preferably formed in the lower wallof the chamber N andcommiinicating, through:

a valve seat n?, with a puissageii'3 leading to the passage p2 whichcommunicates with the manifold L. 'A valve s2 coperates with the valveseat n2 and is referably of the needle t pe. The stem S o the valves2 isin screwthreaded engagement with the passage N2 and extends forwardly ofthe automobile through the radiator D 'to a convenient v point, where itis provided with a suitable y device S for facilitating its rotation toclose or open the valve s. A suitable stuling box surrounds the valvestem to prevent leakage from the chamber N. A valve t cooperates.

with the valve-seat l. and is also preferably of the needle type, and isprovided with ai,

stem T in screw-threaded engagement with a nipple. t projecting from thevalve easing. A suitable stufling. box t2 surrounds the valve stem T andengages the nipple t to prevent leakage.4 The valve stem T extends to.a-

point where it may be conveniently operated, as, for instance, throughthe dash board E, where it is provided with a device T to facilitate itsrotation to thereby open threaded recess in the valve casing P. The

valve casing may be conveniently mounted upon the manifold through anysuitable con nection, as shown in Fig. 3.

. The operation o f'my improved priming .attachment for explosiveengines is as foI'-,` lows: Assuming that the valves s and t are. closedand it is desired to start the cngincg',

the valve tis opened by' rotating the` valv'e' stem T. This places'thepriming conduit in direct communication with the manifold L throii h themedium of the chamberi N., conduit --which is in effect' a continuationof the priming conduit M-valve casing P, and passages p and p2 therein.'lhe startwliich reciprocates the pistons within the cylinders andcreates sufficient vacuum therein to lift the hydrocarbon around thecarbiireter directly into the engine cylinders, where it is' readilyexploded through the u siial ignition system. The valve`t may be allowedto remain open to a greater o1' less extent after the engine has beenstarted, in order that the normal explosive mixture-supplied to theAengine through the e'arbureter may be supplemented by the more highlyexplosive Huid,` delivered through the priming condiiit,\iiiitil suchtime as the engine cylinders have become warm enough to insure thenormal vaporization of the hydrocarbon.. The valve t may then'be closedand the engine operated in its normal manner by the explosive mixturesupplied from the carburetor.

During the above operation, incident to the starting of the engine,liquid hydrocarbon is drawn through the priming conduit M into thereservoir' or chamber N at the `same tiine'that it, is drawn through theeon- ,ing crank is rotated in the usual manner,

2O 'the ignition circuit.

the stem S, aindto then crank'the engiinev which draws the liquidhydrocarbon stored in the chamber N through the passage N2, past thevalvev seat nand through the pas- 5 .sages n3 and p? into themanifold.It is therefore merely4 necessary to rotate the starting crank veryslightly, as it takes very little suction in the engine cylinders todraw the gasolene. from thel chamber N through the curved tube or siphomR and' com-munieating passages into the manifold.

Before the engine is stop ed the valve t should preferably be opened),in order that the Aengine may -itself automatically liftthe primingliquid hydrocarbon through the carbon from the chamber N into thecylinders and insure the practical instantaneous starting of the engine.Should, however, the operator prior to stopping the engine fail to openthe valve t, and consequently .fail to autoiriatically supply to theengine cylinders a priming charge ready for a subsequent starting of theengine,.it is merelynecessary'to slightly crank the engine, sufficientto draw a priming change from the cham- 5 ber N in *ne engine cylinders,it being unnecessary io crank the engine to the extent' requisite duringthe-priming charge from the point at which the priming conduit Mcommunicates with the fuel supply.

40 From the foregoing description it will be observed that I haveinvented an improvement in priming devices for explosive engines bymeans of which a priming charge will be automatically stored at a pointadjacentthe engine cylinder, so that a very slight cranking Vissufficient to draw the priming charge into the engine cylinder andinitiatethe explosion therein. In fact, the; position of the reservoirin which the liquid fuel .is trapped may,I under certain circumstances,supply the priming fuel to the eiigine c. linders by gravity, so thatthe mere opening of the valve ifrom the reservoir to the enginecylinder, and the subsequent closing of the ignition circuit, Will startthe explosions, without the necessity of even i--lightily cranking the,engine.

While T have described my invention with more or less minuteness and asbein-g embodied in certain precise forms, yet it 'will construction, andarrangement, the .unis-ion ofin'iniaterial part-1. and the.-iibslitulifin of eiluivalents. as iii-riiiii. lnii:'e-i may -ugvjestor necessity render expedient.

I claim i l. The combination with an explosive engine, of a closedreservoir i'oi'ii'ainiingj liquid,

fiiel for-'priming the cylinder, mean-4 ronnecting .said reservoir with:i supply of Yliquid fuel and with the engine cylinder,

whereby the suction created iii the cylinder lby the recipi'oraiion ofthe pistoi. i'liereiii automatically stores liquid fuel in saidreservoir preparatory to subsequently starting the engine, and'nieansfor supplying fuel from said reserroi r to the engine cylinder.

Thecombinationwithanexplosiveenginc of acloscd reservoircontainii'igliquid fuel for priming the engine cylinder, a conduitleading to said reservoir from a supply of liquid fuel, and from saidreservoir to the engine cylinder, whereby the suction created in thecylinder by the reciprocation of the piston stores liquid fuel in saidreservoir, and a conduit leading from said reservoir to the enginecylinder. l

The combination with an explosive en-v gi'nc having a manifoldcommunicating therewith ol a reservoir containing liquid fuel forprimingthe engine cylinder, a conduit leading to said reservoir from a supplyof liquid fuel and from said reservoir to the manifold of the engine.cylinder, whereby the suction created in the cylinder by thereciprocation of the pistontherein stores liquid fuel in said reservoir,a second conduit leading from a point adjacent the bottoni of saidreservoir and communicating with the engine cylinder through themanifold, and means 'for separately controlling said two conduits.

4. The combination with an explosive eugine, comprising .a cylinder, amanifold communicating therewith and a reciprocat- 1 ing piston therein,of a carhuretr, a conduit leading from the carbureter and communicatingwith the manifold for normally .supplying an explosive mixture to thecylinder, a conduit independent of the conduit ing from a point adjacentthe bottom of said reservoir and communicating through the manifold withthe cylinder, and a valve for lcontrolling said last conduit.

5. Thefcombination with an explosive engine, comprising a eylinden amanifold communicating therewith and a reciprocating piston therein, ofa carbureter,i a conduit -awr leading from the carbureter for normallyinder, and means for controlling the How supplying an explosive mixturethrough the of said trapped fuel to the engine cylinder. 1o manifold tothe cylinder, a priming con? ,In testimony whereof, I have subscribedduit lay-passing the carbureter and leading my name.

from a fuel supply to the manifold, a reser- 'WEBB JAY. voir formingpart of said priming conduit for automatically trapping therein apriming-supply ofL fuel adjacent the engine cyl- I Witnesses GEO. L.WILKENSON, F. A. FLORELL.

